Undelivered mail

Undelivered mail

Hi,

I'm getting "This is a permanent error. User Unknown" sending email out to anyone in the @smartdevil.com domain (eg.stephen@smartdevil.com). It works from Hotmail, Yahoo, etc but not from Zoho. It worked previously. Please note, I have stephen@smartdevil.com set as the default email id.

Also, my acct is also blocked after trying too many times. "Sender Address Blocked". Can you please unblock user: smartdevil.slim@zoho.com